title: Primary meningococcal pneumonia: a report of three cases.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000667:Ampicillin / Q000627:therapeutic use; D004653:Empyema / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008589:Meningococcal Infections / Q000175:diagnosis* / Q000188:drug therapy; D008875:Middle Aged; D009345:Neisseria meningitidis; D010400:Penicillin G / Q000627:therapeutic use; D011014:Pneumonia / Q000175:diagnosis* / Q000188:drug therapy
chemical_list: D000667:Ampicillin; D010400:Penicillin G